Spiral Galaxy Messier 81
by Stocktrek Images
Title
Spiral Galaxy Messier 81
Artist
Stocktrek Images
Medium
Photograph - Photograph
Description
The spiral galaxy known as Messier 81, or M81. M81 is a grand design spiral galaxy, which means its elegant arms curl all the way down into its center. It is located about 12 million light-years away in the Ursa Major constellation and is one of the brightest galaxies that can be seen from Earth through telescopes. The colors in this picture represent a trio of light wavelengths blue is ultraviolet light captured by the Galaxy Evolution Explorer; yellowish white is visible light seen by Hubble; and red is infrared light detected by Spitzer. The blue areas show the hottest, youngest stars, while the reddish-pink denotes lanes of dust that line the spiral arms. The orange center is made up of older stars.
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December 7th, 2011
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